Improvement in the manufacture of brushes



C. L. W. BAKER. Manufacture of Brushes.`

No. 207,793. -Patented sept-.40, 187s..

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UNITED STATES PATENT OEEICE CHARLES L. W. BAKER, OF CAMBRIDGE,MASSACHUSETTS.

IMPROVEMENT IN THE MANUFACTURE OF BRUSHES.

Specification forming part of Letters Patent No. 207,793, datedSeptember 10, 1878 g application led May 13, 187s.

To all whom it may concern:

Be it known that I, CHARLEs L. W. BAKER, of Cambridge, countyk ofMiddlesex, State of Massachusetts, have invented an Improved Method ofand Apparatus for the Manufacture of Brushes, of which the following isa specification:

rIlhis invention relates to a new method of, and to mechanism employedin, the manufacture of brushes having oblong heads, such as varnish andwhitewash brushes.

One part of this invention consists in placing upon the head or over andabout the handle portion of a brush, which is to be inserted within thebristles, a wedged-shaped directin g-shoe, which separates and passesentirelyl through the massk of bristles held in the headband, thebrush-head or handle and head following the shoe into the opening madesubstantially centrally in the mass of bristles where the head issecured.

This directing shoe makes it possible to drive handled heads providedwith shoulders or corners between the head and handle proper, and alsoshouldered heads, as of whitewashbrushes, whereby such brushes may bemade with rigid one-piece head-bands.

The invention also consists in the combination, with a clamp to hold thehead-band and bristles in place, of a plunger and suitable mechanism tooperate it, whereby the plunger acting upon the base of the head, orthat end of the head which is to rest within and be connected by thebristles, drives such head and the directing-shoe applied at itsopposite end through the head-band and bristles held in the clamp. Thiswedge, commencing at its larger end, is recessed sufficiently to receivewithin it the shouldered portions of the head or handle portion of thebrush, as shown in the drawing.

- Figure l of the accompanying drawings illustrates in vertical sectionone form of mechanism for manufacturing a brush in accordance with myinvention 5 Fig. 2, a front view thereof; and Fig. 3, one form of brushwhich it is proposed to make, the directing-shoe being applied to thebrush-head.

Upon the base a of the machine are placed the two jaws c d of the clamp,the jaw d of which is made adjustable in any suitable manported at theireXtreme ends.

ner, herein shown, by screws and thumb-nuts e, so that the head-band f,in this instance shown as a one-piece metal band, may be' exceptat thecenter of the mass of bristles, where, for a space equal to the spacerequired for the passage of the wed ge-shaped directing shoe h throughthe center of the mass of bristles and between the clamps, they areunsup- Thisdirectingshoe will preferably be made of metal and of wedgeform, so as to be forced in a straight line down through the center ofthe mass of. bristles and the head-band, in advance of the head t' ofthe brush, or that portion which is to rest directly Within thebristles, and immediately above the upper ends of said bristles.

In Fig. 3 the head is shown as provided with a handle, k, shaped 'asdelineated in dotted lines, such-handle being in such gure, as in Fig.l, contained in the shoeh.

An oblong shouldered head, like an ordinary whitewash-brush or avarnish-brush, h. ving a shoulder between its head and handle portion k,could not be driven down through the bristles, as could a round orregularly-tapered handle; but by means of the directingshoe, the largeend of which covers the shoulders or corners of the head, I am enabledto drive the head, or head and handle, of any oblong-shaped brush,notwithstanding such head has shoulders, such as shown in Fig. 3, orsuch as are common to whitewash and other similar brushes.

In the manufacture of the brush, after the directing-shoe and head areplaced within the bristles, as shown in Figs. l and 2, the follower l,attached to a cross-bar, m, directed by guides a, is brought downagainst thev head of the brush at its under side, and by the cam o andlever p, or other suitable moving devices, such follower is movedlongitudinally far enough to drive the head Yinto the proper placewithin the bristles and head band, where it is securely held by rivetsi" or in other proper and usual way.

Instead of the cam 0, Iv may employ any other follower-moving devices,such as togglejoints.

I claiml. In the manufacture of brushes, the herein-described method ofintroducing the head, it consisting in applying to such head awedgeshaped directing-shoe to separate the bristles, and lead the headthrough the bristles and head-band, substantially as described.

2. Thewed ge-shaped directing-shoe, adapted to receive Within it thehead or head and handle, substantially as described.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES L. W. BAKER.

Witnesses:

G. W. GREGORY, L. F. CONNOR.

